22420111 has 4 divisors (see below), whose sum is σ = 25622992. Its totient is φ = 19217232.

The previous prime is 22420087. The next prime is 22420117. The reversal of 22420111 is 11102422.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 22420111 - 2⁷ = 22419983 is a prime.

It is a super-2 number, since 2×22420111² = 1005322754504642, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22420091 and 22420100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22420117) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1601430 + ... + 1601443.

It is an arithmetic number, because the mean of its divisors is an integer number (6405748).

Almost surely, 2^22420111 is an apocalyptic number.

22420111 is a deficient number, since it is larger than the sum of its proper divisors (3202881).

22420111 is an equidigital number, since it uses as much as digits as its factorization.

22420111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3202880.

The product of its (nonzero) digits is 32, while the sum is 13.

The square root of 22420111 is about 4734.9879619699. The cubic root of 22420111 is about 281.9762860867.

Adding to 22420111 its reverse (11102422), we get a palindrome (33522533).

The spelling of 22420111 in words is "twenty-two million, four hundred twenty thousand, one hundred eleven".